Tax Order Thysanura
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STUDY OF THE IMPORTANT FAMILIES UNDER THE ORDER THYSANURA, DERMAPTERA, DICTYOPTERA, ODONATA, ORTHOPTERA AND ISOPTERA Fig. Silver fish (Lepismatidae, Thysanura) Fig. Dragon fly (Aeshnidae, Odonata) O : Thysanura F : Lepismatidae CN : Silver fish Ch : Body covered with silvary scales. Last abdominal segment bears a pair of cerci and a median caudal filament. Antenna long and filiform. O : Odonata F : Aeshnidae CN : Dragon fly Ch : Body stout and robust. Wings dissimilar, i.e. the base of the hind wings are broader than the base of the fore wings. Wings held horizontally when at rest. Compound eyes larger and contagious. Stigma present at apex of the each wing. Fig. Damsel fly (Coenagrionidae, Odonata) Fig. Short horned grasshopper (Acrididae, Orthoptera) O : Odonata F : Coenagrionidae CN : Damsel fly Ch : Body slender. Both wings similar. Compound eyes larger but separated. Stigma present on each wing. O : Orthoptera F : Acrididae CN : Short horned grasshopper Ch : Antenna much shorter than the body, filiform. Hind leg jumping type. Jumping tpe hind Similar fore wing Median caudal Cerci Contagious
Transcript of Tax Order Thysanura
STUDY OF THE IMPORTANT FAMILIES UNDER THE ORDER THYSANURA, DERMAPTERA, DICTYOPTERA, ODONATA, ORTHOPTERA AND ISOPTERA
Fig. Silver fish (Lepismatidae, Thysanura)
Fig. Dragon fly (Aeshnidae, Odonata)O : ThysanuraF : Lepismatidae CN : Silver fishCh : Body covered with silvary scales.
Last abdominal segment bears a pair of cerci and a median caudal filament. Antenna long and filiform.
O : OdonataF : Aeshnidae CN : Dragon flyCh : Body stout and robust.
Wings dissimilar, i.e. the base of the hind wings are broader than the base of the fore wings. Wings held horizontally when at rest. Compound eyes larger and contagious. Stigma present at apex of the each wing.
Fig. Damsel fly (Coenagrionidae, Odonata)
Fig. Short horned grasshopper (Acrididae, Orthoptera)
O : OdonataF : Coenagrionidae CN : Damsel flyCh : Body slender.
Both wings similar. Compound eyes larger but separated. Stigma present on each wing.
O : OrthopteraF : Acrididae CN : Short horned grasshopperCh : Antenna much shorter than the body, filiform.
Hind leg jumping type. Fore wing modified into tegmina. Ovipositor short. Tarsi 3 segmented Tympanum on first abdominal segment
Jumping tpe hind leg
Similar fore wing
Median caudal filament
Cerci Contagious eyes
STUDY OF THE IMPORTANT FAMILIES UNDER THE ORDER THYSANURA, DERMAPTERA, DICTYOPTERA, ODONATA, ORTHOPTERA AND ISOPTERA
Fig. Long horned grasshopper (Tettigoniidae, Orthoptera)
Fig. Field cricket (Gryllidae, Orthoptera)O : OrthopteraF : Tettigoniidae CN : Long horned grasshopperCh : Antenna longer than body and and filiform.
Ovipositor sharp, flattened and blade like structure. Hind leg jumping type and tarsi 4 segmented.
O : OrthopteraF : Gryllidae CN : Field cricketCh : Body large dull, usually pale, brownish or black in color.
Ovipositor long needle like. A pair of unsegmented cerci present. Fore wings modified into tegmina. Hind leg jumping type.
Fig. Mole cricket (Gryllotalpidae, Orthoptera)Fig. Earwig (Forficulidae, Dermaptera)
O : OrthopteraF : Gryllotalpidae CN : Mole cricketCh : Robust body.
Ovipositor short and vestigial. Front leg greatly enlarged and modified for digging. A pair of long unsegmented cerci present. Fore wings modified into tegmina
O : DermapteraF : Forficulidae CN : EarwigCh : Cerci modified into forcep like structure.
Fore wings short, modified into tegmina and hind wings semi circular and folded beneath the tegmina.
Antenna short and filiform. Tarsi 3 segmented.
CerciDigging type fore leg
CerciCerci CerciOvipositor
Ovipositor
Ovipositor
Fig. Cockroach (Blattidae, Dictyoptera)
Fig. Preying mantid (Mantidae, Dictyoptera)
O : DictyopteraF : BlattidaeCN : CockroachCh : Body oval, flattened, head partly or completely covered by the shield like pronotum.
Antenna longer than the body filiform. Cursorial or walking and running type leg. Fore wings modified into tegmina, hind wings membranous. Mandibulate mouthparts, chewing type
O : DictyopteraF : MantidaeCN : Preying mantidCh : Head movable
Prothorax greatly elongated. Fore leg raptorial type adapted for grasping prey.
Fig. Termites (Termitidae, Isoptera)O : IsopteraF : TermitidaeCN : Termite Ch : Broad junction between thorax and abdomen
Antenna moniliform, multisegmented. Workers with larger head and prominent mandible. Winged or wingless; winged formed with two pair of wings similar in size and shape, held flat
over the adomen at rest. Mouthparts chewing type.
Pronotum
Tegmina
Prothorax
Raptorial fore leg
